We Are Ophthalmology LTD We Care About Your Health

Over the years, Ophthalmology LTD's name has become associated with the highest quality of comprehensive medical and surgical eye care. Highly trained ophthalmologists David West, Bryan Hammer, Gregory Osmundson, Eric Thomas, Dustin Dierks, Ryan Geraets, Michael Eide, Elizabeth Atchison, and Elise In’t Veld, as well as experienced optometrists Andrea McCann and Emily Walters combine their considerable expertise to give each and every patient the best possible care. Ophthalmology LTD delivers treatment for cataracts, glaucoma, diabetic eye disease, as well as cornea transplants, oculoplastic surgery, retina surgery, vitreoretinal surgery, and pediatric eye care in Sioux Falls.

The Finest Eye Specialists in the Tri-State Area

Ophthalmology LTD brings the finest eye specialists in South Dakota to satellite offices in the tri-state area: Luverne, Pipestone, Worthington and Windom in Minnesota, Rock Valley, Sibley, and Sioux Center in Iowa, as well as Dell Rapids, Madison, Mitchell, and Yankton in South Dakota.


In 1968, Ophthalmology LTD revolutionized eye care by taking a comprehensive approach, bringing patients a full range of vision specialties under one roof. Today, eye care teams across the nation are now mimicking the strategy we have spent more than 50 years perfecting. It is because of this experience and our genuine dedication to our patients that our team is widely considered the finest, most comprehensive group of sub-specialty eye surgeons in the tri-state Siouxland area.

Our Services

Our ophthalmologists have expertise in a wide range of specialties and work as a team to meet your eye care needs.


Not only is cataract treatment the most frequently performed surgery in the United States, it is also one of the most successful. More than 99% of patients who undergo cataract removal rank their vision as significantly improved. Drs. Osmundson, Hammer, Dierks, Eide, In't Veld, and West perform this highly effective procedure.

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Early detection and treatment is the key to preventing vision loss with Glaucoma. More than three million Americans have glaucoma, but only half are actually aware that this "silent thief" is slowly and without warning stealing away their vision, sometimes without any noticeable symptoms. Drs. Osmundson and In't Veld  at Ophthalmology LTD specializes in the diagnosis and treatment of glaucoma.

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Children should have a yearly comprehensive eye exam along with their parents. Many vision problems can be detected early and treated before they become detrimental to a child's development, learning abilities, and every day function. Dr. West of Ophthalmology LTD has 22 years of experience in the evaluation and treatment of children's vision.

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The retina functions much like the film in a camera, and when film is damaged, so is the picture. Our retinal specialists Drs. Geraets, Thomas, and Atchison  offer comprehensive retinal exams and treatment to protect against diseases such as diabetic retinopathy that can damage your retina and vision.

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If a window pane is distorted or marred by imperfections, it is difficult to see out through it clearly. Your cornea is your eye’s window. To keep it clear or to restore it to its proper state, Dr. Eide of Ophthalmology LTD uses his specialty training in corneal diseases to treat dry eye, keratoconus, and other conditions that can cause corneal imperfections.

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When your eyelids, eye sockets, or tear ducts malfunction, or a tumor threatens your vision, Ophthalmology LTD oculoplastic surgeon Dr. Hammer can help. Specializing in procedures that restore clear vision as well as a more youthful appearance, Dr. Hammer treats and manages a wide variety of ocular conditions.

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We are a team of passionate professionals with
caring for patients in South Dakota, Minnesota, & Iowa.

Have a look around, then call, request an appointment online, or come by to learn more about how our team of eye experts can help you and your family.

  • Roxie E.

    My concerns were handled quickly and information given to me immediately. Dr McCann was efficient, warm and concerned with my care, as were her office personnel. I am looking forward to my next appointment with her!

  • Michael P.

    Ophthalmology LTD has been my “go-to” place for all my eye care.Excellent doctors and professional staff that really care about me tend to my wishes.They are always willing to address any issues I have with my eyes or with appointments.I... read more

  • Dennis D.

    very friendly and professional help.
    Always prompt. Very short wait times alway.
    They're great!

  • Deb '.

    Dr. Hammer was great… Took care of my issue very quickly and efficiently!

  • Ez R.

    All the staff is awesome they are efficient and Dr. Garrets is excellent ! He has a great personality and I suggest if you need help he is the man to ease your stress and help you over treatments you... read more

  • Roger N.

    Dr Hammer was truly amazing. Very knowledgeable and friendly. Thank you!

  • Ted P.

    Very professional! Very thorough!

  • Don &.

    I was very happy with my experience at Ophthalmology LTD yesterday. I saw Dr. Geraets and Dr. Dierks. Together they came up with a plan to address my vision issues. Both were open to questions and explained what they... read more

  • April G.

    I've had 2 appointments with Dr. McCann. Both times I was pleased with the experiences. The time from check in to being seen was short. All staff members I've encountered or had contact with have been friendly and courteous. I... read more

  • Nancy M.

    Dr Edie is so good He takes the time for me My wife goes to him too So Happy with everyone there!!!!!!!

  • Mick C.

    Excellent service. Staff was very personable and efficient. Would highly recommend to others.

  • Sondra K.

    Everything they are very caring about your vision and what they do. Highly recommended.

  • Aaron N.

    Great experience. Dr. West and the nurse were very good and patient oriented.

  • Leonard S.

    I seen Dr. Geraets for a second opinion on my retinal issue for which I was receiving treatment from another ophthalmologist in Rapid City. Dr Geraets was very detailed in his exam and gave me his opinion in a... read more

  • Rich H.


  • LARRY W.

    He was very thorough and inform me what he saw during the.exam. Thank you would recommend you....

  • Jim B.

    Very pleasant and they know there (eyes) business.

  • Cheryl A.

    The staff are always polite and helpful. Even on very busy days they manage to keep the flow of patients moving along very smoothly.

  • Eugene C.

    Great friendly service and knowledge of what is required of your service.
    Keep up the good work.

  • Lynn R.

    Everyone is super friendly and helpful, from the front desk checkin to the doctor herself. This includes the techs, the nurses., even those who are not specifically caring for the patient. Friendly smiles and hellos from staff passing on the... read more

  • Jerald H.

    Great staff. Willing to answer questions and take the required time to explain the procedure and the end result that is expected but also explain problems that may occur.

  • Barb W.

    friendly staff, well organized, efficient, Dr thomas is very thorough and knowledgeable, very pleasant and easy to talk to, I feel very confident with him, he has done a wonderful job with my treatment in the past.

  • Holly B.

    Professional, friendly service with treatment suggestions given making sure you understand the situation. Wouldn’t go anywhere else.

  • Mary K.

    Professional, efficient and friendly physicians and staff. Each visit, for my own eye health or when assisting family or friends, has been positive. We are fortunate to have Ophthalmology LTD in Sioux Falls and the surrounding area.

  • Becki L.

    The staff were all extremely friendly and professional, from the nurse/tech that did all my testing and had me done and ready to visit with Dr. Dierks, the surgery scheduling gals, and the gal at the insurance desk. I would... read more

  • Marlene T.

    The excellent care you receive very friendly.

  • Sandra L.

    I have bad eyes and my doctors at Ophthalmology LTD , know how to treat you, they know there business , I have to have shots in my eye, and it does not hurt . Great job ..

  • Virg D.

    very kind, very professional,
    excellent experience!!
    Dr Karen is the very best!!!!

  • Pat D.

    My visits give me the information I am looking for and the Dr. takes the time to explain everything.

  • Tonya H.

    Very kind and helpful and answered all my questions

  • Elaine S.

    Very professional and helpful.

  • Marjory B.

    Friendliness capable people knowledge of doctor

  • Nduwikunda J.

    All the team are so kind and professional in their job.

  • lynn e.

    It was a very good experience. Everyone was very friendly and helpful.

  • Wayne M.

    I have got to have the need to visit this facility for several years. I was very very impressed and pleased with a facility and staff. Everyone from the registration to the doctor treated me with great respect and professionalism.... read more

  • Ron R.

    A very positive experience from the registration to all the tests to meeting with the doctor where he/she explains the procedure.

  • Larry F.

    Dr Hammer and nurses/assistants were very professional. Although the decision we came to was not necessarily what I wanted the reason to not proceed at this time was the right call. The reasons not to made sense even to me... read more

  • Robert P.

    Dr Atchison was very professional and informative regarding the surgical procedure that may need to be conducted. She was very kind, pleasant, and discussed everything very easily. I would highly recommend her to anyone.

  • Jayme D.

    Dr. West was fantastic. Due to insurance changes, we are transferring care from Dr. Bothun in Rochester, and we were definitely not disappointed. He did fantastic in explaining exactly where my daughters conditions were and what the treatment plan would... read more

  • Catherine C.

    I’m always very satisfied with the professionalism and thorough explanation for whatever help I’m seeking. Thank you, Dr. Osmundson!

  • Rugena E.

    Staff and Dr.Eide were very helpful, pleasant and informative. I would highly recommend them.

  • Keith D.

    Everyone is courteous! Been there for 8 or 9 appointments, always on time. Very thorough, was able to save most of my eyesight in affected eye, even improved it greatly. Thanks to the entire staff.

  • Terry K.

    I appreciated the honesty and expertise of Dr. Hammer. I have mild cataracts. After the examination the opinion of the Dr. Hammer was to wait and not undergo surgery at this time. No doubt in the future I will... read more

  • Dale B.

    The only place to go to. The staff is knowledgeable.

  • Sarah B.

    Had an eyelid excision after having a growth for over 20 years. So glad it went well and was done fast. Thank you.

  • Gloria E.

    Dr Eide and all the staff were wonderful definitely the best highly recommend Thank You. Now I can see the stars in the sky and colors. And read without glasses. I drive over the road can actually read... read more

  • Carol F.

    My eyes feel better with the eye drop change. Thank you so much.

  • Guy E.

    I always have had great experiences at OpthOpthalmology LTD. All of the staff is extremely professional, especially DR Emily Walters.

  • Don B.

    They are very professional and thorough. Friendly and put one at ease.

  • Gail H.

    Everyone was polite on time and very accommodating!!